Insulator-pin.



PATENTED JUN-E 12, 1906.

J. H. BULLARD. INSULATGR PIN. APPLICATION FILED 1813.11.29, 1905.

2 SHEETS-SHEET 1.

PATENTBD JUNE 12, 1906.

v No. 823,461.

. J. H. BULLARD;

INSULATOR PIN. APPLIUATION FILED HAR.9,1905.

2 SHBETS-SHBET 2.

No. ENQASL Specification of Letters ratent. Patented June 12, 1906. Application filed Iiierch 3.5305. Serial Ho. 252,715-

;T'o mil whom, 325 may concern: f Be it known that i, i i-.IIES BULL/AND. ews of Figs. and 6. citizen of the United States of Amer'cs, resio- 1 Referring to the drawings, in which like leting at Springfield, in the county of inpden I tors refer to like parts in the d 's. 7 and 8 are respectively top and plan i lerent figures, and State of Iriessachusetts, have mventa indicates en insulator of 0rd. aryconstrucnew and useful Improvements in insulatortion, h b the longitc-.iinallydisposed Pins, of which the following; is a s eciiieation. members constituting the pin and which may This invention relate o insulet be made oi metal bars bent up to suitable speci' 'ieslh m the cons shape, 2*." shown in Figs. t i 2, with the Erase portions thereof secor: a cross-bar c by means or e. bolt d or on erwise, or, as the suh ect-ni itter of Letters I shown in 6, these pin members may be United States Led to me on Gctohsr 18, I integral with a base a and used in that 1d numhere 7n,553, the object of form, or they mey he made of malleable 5 the invention beii to provide iinprcver, I me i, if The invention doesnot he invention being in the na ture of an improvement on the construct on fan-111mg means for securing the insulators the pins. the pin construction or the method of it has been found in practice that it is ini 1g the same to a cross-bar, for that convenient and expensive to secure the insuforms the subject-matter of my said prior lators to the pins by means of a plastic suh- 2O stance poured into a cavity in the insulator to hold the latter securely to the end of the pin when the substanc= method necessitates a1 the field is more or hzirdens, as this out w ich in in earryin tins invention into effect the eunihers me and upper ends 0 the bars or pin members 6 may 5 tends to retard the in acts of the workhe made as shown in Figs. 1 and 2-that is, men who are sent on to eq nip the line after i of two suhstsntislly ii-shaped members se- I U the poles have been set, and es cured by their bases to a suitable support-or cables frequently have to he they may he made or" separate conver 'ing rough country and under all wee M161" eon pin members, as shown in Figs. 5 ant 6. 3 tions some means of securing the insu Preiei howe er, the pin is made of the to the pins other than the manner {iSS bed bent-up pin members i) shown in Figs. 1 and 2,

- ahovc have been sought. means 0;" the and there is inserted between these members present invention the securing of the insole and in substantial axial alinement with the tors to the pins can be effected by any one of pin a hlochf, in cross-section having the form 35 ordinary intelligence. hi at cross, edges of the arms of which are .90 The invention is ully illustrated in the acprovided with screw-threads g, adapted to encomp" w ing drawings, in whiche screw-tlneaded recess in in the insula- Fign s is a sectional elevation oi icsrr tor, rectengularly disposed arms of the later-pin, showing the invention applied hlociif extending beyond the peripheries of 4- thereto, the insulator oeing also shown in secthe convex ing ends of the pin members I), as tion. Fig. 2 is e side elevation oi the same shown clecriy in the sectional view, Fig. 3,'to viewed them a. different point, the insulator the end that the screw-threadsg on the block being dotted Fig. 3 is a sectional view may engage with the threaded recess h when of the insulctor pin hit-vin the invention apthe insulator is screwed on. It will be ob- 4 plied thereto, the plane or the section being served, however, from an examination of Fi on line 3 3, 2. Fig. 4 is a perspective 1 that the block f is made tapering and that View of the unoer side or s channeled washer these arms of the block which are located or clamp member for the base of the pin. Fig. between the two separated V shaped pin 5 1s side elevation oi insulator-pin, showmembers Z) are tag'vfered, one of these ta ered 5 a modification of the construction shown. portions lacing indicated by in said i i 1, in Figs. 1 and 2. Fig. 6 is a sine elevation of and the degree of the taper is such that as the an insulah in, showing pins and the insulator is screwed down on the pin and the hose made in one piece instead of se aretcly, inner end of the recess it comes to a bear figures, cnihoc; n on the upper end a the pin members the furas in the preceoing b v thg same mammalian Shown in Fig we? r-ling up of the insulator will efiecfii I3 the spreading 01 the pin members by inc-ens of the drawing up of the tapered portion j of the block su'lliciently to cause the .Jn'inernhers to come to a hearing against t e of the screw-threads in therecess h, and thus bind the insulator tightly to the pin by the described wedging eifect before the end of the bloclr comes in contact with the upper ends of the pins, which being made in the form shown would render this locking action inell'eotive if the block came to a bearing first.

If the pin mem ers are separated one from another at the up er ends thereof, as shown in Figs. 5 and 6, tneefiec't would he eilectl the some as in the construction shown Figs. 1 and 2, and it immaterial which of the pin members eresep arstcd; but, as shown in the sectional views, 7 and is preierred to turn inwardly, at m, 5 8, two adjacent ends or? the pins to overhang the upper ends otoppesitelvdocsted crossarins of the hlockj", the sligh iv-hooked ends of the pins serving to prevent the withdrawal of the block from between the converging ends of the pin lile'rnhers. @hviously, however, these converging ends of the oin members may-he left straight instead of being shaped, and therefore would not made with their er ds turned" one toward the other, as st m; I r

It of course ohvious that the may hesecure'd on the end oi. spin cons ed substantiallyes shown in Figs. 1, 2, 5, en 6, ev on though the block f were not we 7 o spread the ends of the pins to bind the 'ser'ne against the wall of the recess 7;, and aconstruction of this character would fall within the scopeof the invention; but the preferred construction is thetwhich hss heen described. herein.

' Having thus described my invention, what I claim, and desire to secure by Letters Petent of the United States, is-

i. Aninsuletor-pin comprising e plurality 0f pin parts longitudinally disposerhon the free ends of which en'insuletor-rnsy he secured, and means to secure the insulator to the pin consisting of sslideble member fitted between the free ends of the pin with which member the insulator has a screw engage ment, and means to secure the pin parts on a suitable support.

2. An insulator-pin consisting of a plurality of se'lsre-ted individual pin members the ends of which converge to receive an insuletor, tapered screw-threaded member movlocated hetween said converged ends, the insulator being provided with a screwthreoded recess to receive said tapered member whereby in screwing the insulator on said member, the converged ends of the pin members may be separated to secure the insulator on the pin.

An insulator-pin consisting of a pluralit; of separated individual pin members, the converged ends of which constitute a support for en insulator, s screw-threeded member inm'ebly located between these ends, and means to limit the movement thereof toward the one of the pin, together with eninsulator having a. screw-threaded recess to receive c said member.

4. An insulstor-pin consisting of two substeotially' ibsheped pin members, the con vergsd spices of which constitute a sup port for an insulator, a tapered block, crosssheped in cross-section, Inovably locsted betveen the ends of the pin members, the edges ed and extending beyond the sides of thepin members, whereby an insulator having a threaded recess therein may be screwed onto said clock to draw the latter toward the ends or the our members to force them apart laterally against the well of the recess in the insu= letoi. v r

y JAMES BULLABD Witnesses:

VZMHH. OHAPEN,

Ji'HqLEMONS i the erms of said block being screw-thread- 

